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यदि `2sintheta+costheta=(7)/(3)` है तो `(tan^(2)theta-sec^(2)theta)` का मान ज्ञात करे?

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यदि `2sintheta+costheta=(7)/(3)` है तो `(tan^(2)theta-sec^(2)theta)` का मान ज्ञात करे?
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Correct Answer - b
`2 sin theta+cos theta=(7)/(3)`
`=(tan^(2)theta-sec^(2)theta)`
`=(sec^(2)theta-1-sec^(2)theta),(because 1+tan^(2)theta=sec^(2)theta)`
=-1
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